I was one of the first people on this site to bring up the puking problem. Since then a lot of folks have chimed in. I've gone 5 years with this problem. New pump, re-built carb, multiple settings, everything. All done either by the dealer or myself. There is really no time or place or condition that set mine off so it was virtually impossible to pinpoint the problem. The only constant was the engine was warm(NOT necessarily hot), it would happen when the ignition was turned on, and it would stop when the engine fired up. My conclusion is the pump is the main culprit. It's the only thing that affects the fuel delivery system when the key is turned but the engine has not started. So, as you might have read in a post I have going right now, I have dumped the pump. I have read all sorts of theory's but none of them make much sense since it is a small number of bikes that have this problem.
Unfortunately, with the weather out here right now I won't really be riding that much to truely test it for a while. But I do have a good feeling about it this time, and it looks great!